Road testing method and system for achieving automatic speed changing of vehicle
An automatic transmission and road test technology, applied in vehicle testing, machine/structural component testing, measuring devices, etc., can solve problems such as inaccurate cycle simulation of working conditions
Active Publication Date: 2012-10-24
WEICHAI POWER CO LTD
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to realize the automatic control of automobile speed change, and provide a road test method and system for realizing automatic speed change of automobiles, so as to solve the technology in the prior art that the cycle simulation of working conditions is inaccurate due to the user's subjective realization of automobile speed change question
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Embodiment 2
[0068] reference figure 2 As shown, the present invention provides Embodiment 2 of a road test method for realizing automatic transmission of a car. This embodiment can be regarded as a specific example of the present invention in practical applications. This embodiment may specifically include:
[0069] Step 201: Input the required parameters for the test.
[0070] The parameters include automobile parameters, simulated working condition cycle parameters and test environment parameters.
[0071] Step 202: The signal processing unit estimates the entire test conditions according to the parameters.
[0072] The budget specifically includes: the signal processing unit plans the vehicle conditions during the road test of the actual vehicle according to the road conditions of the test site and the cycle requirements of the simulated working conditions, and uses the GPS positioning unit to collect the position of the car and the vehicle speed information, and determine the best test Trigg...
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The invention discloses a road testing method for achieving automatic speed changing of a vehicle. The method comprises the following steps of: receiving collected actual vehicle speed of a motor vehicle at the current time; judging whether the motor vehicle needs to change speed or not according to the actual vehicle speed at the current time and a desired target vehicle speed at the next time of the current time in a simulation test condition; and if so, calculating a variable speed controlling quantity; and achieving the automatic speed changing of the motor vehicle according to the variable speed controlling quantity. According to the invention, the automatic speed changing of the motor vehicle is achieved by judging whether the motor vehicle needs to change speed or not, and if the speed needs to be changed, calculating the corresponding variable speed controlling quantity, and analyzing the variable speed controlling quantity; therefore, user involvement in the speed changing process of the motor vehicle is reduced and the speed of the motor vehicle is controlled in real time, so that the condition simulation accuracy is guaranteed.
Description
Technical field [0001] The present invention relates to the field of automatic control, in particular to a road test method and system for realizing automatic transmission of automobiles. Background technique [0002] Energy conservation, environmental protection and safety are the themes of the development of modern automobiles. With the increasingly serious energy problem, the country has put forward higher requirements for the fuel consumption of traditional automobiles, and relevant test regulations have become increasingly strict. According to the existing domestic test conditions, it is difficult to carry out actual vehicle fuel consumption tests accurately in accordance with the test methods stipulated by laws and regulations, especially the recommended national standard GB / T27840-2011 "Measurement Method of Heavy Commercial Vehicle Fuel Consumption" issued in 2011 The specified new C-WTVC test cycle is very complicated, and it is difficult for road tests to achieve accura...
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IPC IPC(8): G01M17/007
Inventor 杨明伟杜志良盛云
Owner WEICHAI POWER CO LTD